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Finding the Third Proportional to 3,408 and 4,825

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Solution

The third proportional to 3,408 and 4,825 is: 6,831.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408 : 4,825 = 4,825 : x
  2. Step 2: Convert to fraction form
    3,408/4,825 = 4,825/x
  3. Step 3: Cross multiply
    3,408x = 4,825 × 4,825
  4. Step 4: Simplify right side
    3,408x = 23,280,625
  5. Step 5: Solve for x
    x = 23,280,625/3,408
  6. Step 6: Final answer
    x = 6,831.17

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.